⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Potamogeton polygonifolius in version 1.1 of The Plant List.
This name is a synonym of Potamogeton parmatus .
The record derives from Tropicos which reports it as a synonym (record 26300033
) with original publication details: Annuaire Conserv. Jard. Bot. Genève 105 105 1905.